Fig. 4

Regeneration time tests conducted with WHO cone tests against metabolically resistant Anopheles arabiensis. Tests measured control corrected 24-h mortality (M24) with 95% confidence interval (95% CI) of pyrethroid PBO ITNs using the standard WHO longitudinal method and complete series method, N = 40 cone tests per time point. Blue colour represent first test with 2 h acclimation and orange colour signifies the second test with 3 h acclimation for refrigerated samples. Solid lines represent washed ITNs, while dotted lines represent unwashed ITNs of the same product tested concurrently for reference. Product A had 16.74 g PBO and 0.62 g alphacypermethrin, Product B had 1.27 g PBO and 14.23 g alpha-cypermethrin and Product C with 150-denier monofilament polyethylene incorporated had 20 g permethrin and 10 g PBO